Antiskid attachment for tires.



A. G.'BRUCE. A NTISKID ATTACHMENT FOR TIRES.

4 I APPLICATION FILED lUllY 2, TQM- 1,188,189.,

'Patentd May 4, 1915.

' ran s 'rrs ANDREW BRUCE, oF'MEAD, NEBRASKA.

AnrI'sKInJATrA'cnMnnr FOR Tin-Es.

' To all whom it may 210mm.- 1 1 Be it known that I, ANDREW G. BRUCE,

a citizen ofthe United States, residing at Mead, in'the count ofSaunders and State of Nebraska, have invented new and usefulImprovements in Antiskid Attachments for Tires, of which the followingis a'specifi ca- I tion.

v This invention relates to certain new and useful 'improveme'nts' in.anti-skid attachments for'tires, and the primary object thereof is toprovide an attachment which embodies means of novel constructionwhichcontact with the surface of the road being traveled and which preventsthe chains that are employed to secure the aforementioned I means to thetire from contacting with the showing a modified form of cap or disk in.

top plan.

The invention includes a series of caps or disks 1, which seat on theirlower faces upon the tread portion of the; tire P, the lower faces ofthe caps or disks having theiroperipheral portions rounded at 2 so as toeliminate any sharp edges which would, if present, biteinto the tire.The ,upper face of each disk 1, is provided with ribs 3 which projectoutwardly and are preferably ar-.'

ranged at rightangles to each other to thus present a substantially Xshape arrangement or formation. 'The outer free end of each rib isperforated to receive the respectivelateral chains '4 which latter arealso ar-' ranged in a somewhat X formation, and are connected at theiropposite ends to-chains 5 Y which extend circumferentially of the wheeland on oppositesides of the latter. It will be apparent from the abovethat the several chainsand the disks which are con nested thereto maycreep circumferentially of the tireiso as to not subject the tire tocontinual-wear at fixed points of the disks 1.

For the purpose of enabling the disks to i Specification of LettersPatent.

Patented May a, 1915.

. Application filed July 2, 1914. Serial N 0 848,624.

be easily and quickly applied to and removed from the respectiveattaching chains 4, I employ a modified form of disk shown in Fig. 3 ofthe drawing, in which the -general structure and arrangement of the ribsand dlsks remain the same, excepting that the ribs are each providedwith lateral offset ends 6, and a diagonal pin 7, rigidly secured toeachof the o-fiset ends 6, so that the chains ,may be placedover the pins 7and are held against accidental displacement by fiat sprlngs 8, whichlatter are riveted or otherwise suitably secured at 9, to the sides of vthe ribs opposite to the sides that are ofiset.

The springs 8 are free or unattached at their outer ends, so that theoperator may simply grasp the free ends of the springs with his fingersand move same away from the pins 7 to thus allow 'the links of thechains'to bev placed over the pins, whereupon the springs are releasedand instantly return to' positions in engagement with the pins 7 It willthus be apparent that the ofiset ends 6 and the springs? provide pocketsin which the chain ends are received. By diagonal disposition of the.pins 7 the latter are enabled to more efiectually resist the pull of thechains.

'It'will alsobe apparent from the above that the extreme outer ends ofthe chains 4' will also contact with the surface of the road andthus'assist the anti-skid properties of the disks and more particularlythe ribs thereon. v

What is claimed is:'

1. In an 'anti ski dattachment for tires, a

series of disks seating on the tread thereof,

tegraltherewith, said ribs intersecting each other centrally, and havingtheir ends substantially flush with the peripheries of'the disks, saidribs having perforations formed 1n their free outer ends, chainsections-hay; nag-one of their ends engaged in said pereach diskfhavinga pair of ribs formed inforations and disposed I transversely of thesides of the tire, and chains disposed circumferentially of the tire andto which the other ends of the chain sections are secured to hold saiddisks on the tire tread.

In an anti-skid attachment for tires, a seriesof disks seating on thetire tread, ribs on the disks having offset outer ends and hav ing pinswhichare connected to said offset ends and extend laterally of thelatter,

chains extending laterally of the tire and In testunony whereof I havehereunto set i my hand inpre senceof two subscribing Wit- I nesses.

Witnesses: J. HUFFMAN,

J. B. S EE AiwD'REW BRUCE. I

